flutter is a kind of CCK Content Creation Kit for Wordpress, you can create custom fields and groups (example, model, price, picture), retrieve and create templates for your data sets
Wordpress evolved. Pods lets you create, manage, and display custom content types using WordPress. Like Dupal CCK, these content types can relate to one another, allowing for sites packed with interconnectedness.
Pods is a CMS framework for WordPress. It's a plugin that sits on top of WordPress, allowing you to add and display your own content types.
These content types, or "pods", are totally separate from Posts, Pages, or Custom Fields. The Pods plugin uses its own database structure for maximum efficiency, and for relationships among items.